I've been using Protein Customizer for about 8 months now, and I am pleased with the product and the service. I have never used Protein Factory because a thread at bb.com and an article at avantlabs scared me away.
My only complaint is their website. It fights with my browser and I can't order multiple custom protein blends on-line so I have to remember to call them during Chicago business hours. I think business is picking up for them because the last two orders have taken a day or two longer than the first three, but it's still making it from Chicago to California in about a week.
A couple recent developments that appeared for the first time in my November order:
- they are now using vacuum sealed thick grade plastic bags that have reclosable ziplocks so you can reseal them. The ziplock is the new feature, they've always had heavy duty vacuum sealed bags.
- they began shipping 70 cc scoops with their protein
If you do a search under my name, I have a protein customizer thread on here that'll give more info.
~Todd